You can show or hide cancelled appointments on your schedule by going to Settings, General, System, Scheduling. Under the Dashboards section, beside the Highlight & Display Cancelled Appointments, select Yes or No and Save.
Cancellation Report:
You can create a list of appointments by going to the Report tab. Under the Scheduling heading select Cancellations by Practitioner. You can select to create a report on any or all of the cancellation reasons.